TW201044803A - Bidirectional multiwavelength optical signal routing and amplification module - Google Patents

Abstract

The present invention provides a bidirectional optical signal traffic-directing and amplification module which is used in a method for simultaneous real-time status monitoring and troubleshooting of a high-capacity single-fiber hybrid passive optical network that is based on wavelength-division- multiplexing techniques.

Description

201044803 VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to a fiber-optic network architecture, in particular to a bi-directional multi-wavelength routing and amplifying module applied to a split-wave multiplexed bedding: =· just) In the system, it can effectively detect split-wave multiplexed passive light: [Prior Art] Ο Ο Many solutions using split-wave multiplexing technology have been proposed to expand the network. The attractive characteristics of the split-multiplexed passive optical network, such as high-capacity and low-bit-bit price, make such a network: 2 =: = high-capacity, immediate, on-demand data transmission. In order to maintain the viability of the network, the split-multiplexed passive optical network needs to be effective and respond to failures and emergencies. In addition, in the Internet ^ WF 'fiber communication network architecture monitoring and maintenance gradually = raw = fiber optic communication network fiber branch path error, can find = breakpoint fiber branch path 'even find the location where the error occurred Yes, it is extremely important to maintain and monitor the transmission of the fiber optic communication network. The method of smashing must be highly flexible so that it can be continuously robbed, and when the communication line fails or the breakpoint of the wavelength channel τ can be detected. The time domain reflectometer is an instrument used to measure the characteristics of an optical fiber. When operating, the tester = the reflectometer will hit people - a series of light pulses into the fiber to check the = test method uses the same side of the pulse to receive the light signal, while the entered k number encounters different refraction The rate of the medium will scatter and reflect back to 3 201044803. The intensity of the reflected light signal is measured and is a function of time that can be converted to the length of the fiber. Therefore, the optical time domain reflectometer can be used to measure the length and attenuation of the fiber. Many previous concepts have proposed the use of an Optical Time Domain ReHectometer (0TDR) to independently monitor each of the split-multiplex channels. In these concepts, the optical time domain reflectometer is located at the central control (Central Office: CO), and the signal of the optical time domain reflectometer is transmitted to the Arrayed Waveguide Grating (AWG) in the main control. Between the locations of the network nodes. Another alternative to wideband optical time domain reflectometers is to have a different length for each distributed fiber, but this is a cumbersome implementation strategy, provided by EXFO Optoelectronics, Inc., Quebec City, Canada, in 2005. Technical solution FTTx ΡΟΝ Technology and Testing. Due to the need for an adjustable laser source on the main control terminal and the need to arrange the optical time domain reflectometer pulse to sequentially pass through the channels of the 0-wave multiplexed passive optical network in a sequential cycle by channel, based on the adjustable light time The solution to the domain reflectometer approach adds cost and complexity. Published in Proc. Symp. IEEE/LEOS Benelux Chapter, 2006, Eindhoven, pp.l3_16 (W. Chen, B. De Mulder, J. Vandewege and XZ Qiu et al.), entitled "Embedded OTDR Monitoring of the In the context of Fiber Plant behind the PON Power Splitter, an optical time domain reflectometer function needs to be embedded into each optical network node transceiver, thus increasing the cost of using components. And published in Meas. Sci. Technol., vol. 17, pp. 1070-1074, April 2006 (S. Hann, J.-S. 4 201044803

Yoo, and C.-S. Park et al., entitled "Monitoring Technique for a hybrid PS/WDM-PON by using a tunable OTDR and FBGs"), based on the use of tunable optical time domain reflection The instrument connects the individual Fiber Bragg Gratings (FBGs) to each optical network node, which requires complex implementation strategies and is not easily expandable. Also, published in Optics Express, vol. 15, ρρ.1461-1466, 19 Feb. 2007 (J. Park, J. Baik and C. Lee et al.), entitled "Fault-detection technique in a WDM- In the PON" €) monitoring scheme, an adjustable optical time domain reflectometer is required, thus limiting the expansion capability and not adding more users. Also, published in IEEE Photonics Technol. Letters, vol. 17, pp 2691-2693, Dec. 2005 (by KW Lim, ES Son, KH Han and YC Chung et al.), entitled "Fault Localization in WDM Passive Optical Network" In the proposal by Reusing Downstream Light Sources, an optical transmitter is used at the main control end to transmit an optical time domain anti-radiator pulse to detect the presence of an upstream signal, which also requires an adjustable optical time domain reflectometer. A specific wavelength signal is transmitted to a given failing branch. Other types of monitoring methods utilize the use of a wide-band light source (distorally sliced at the remote node) in combination with multiple monitoring channels. A wavelength-dependent or band-dependent optical reflector is placed at each optical network node and then by a wavelength dependent component (eg, a fiber Bragg grating, or a wavelength coupler, and a combination of broadband mirrors concentrated on a transmit band of a broadband source) The light reflector reflects the monitoring channel back to the main control terminal, respectively, and is disclosed in IEEE. Lett., vol 42, pp. 239-240, Feb. 2006 (SB Park, DK Jung, HS Shin, 5 201044803 S. Hwang, The contents of Y. Oh and C. Shim et al., and published in IEEE Photonics Technol. Letters, vol. 18, pp 523-525, 1

Feb. 2006 (K. Lee, S. B. Kang, D. S. Lim, Η. K. Lee and W. V. Sorin et al.), titled "Fiber Link Loss Monitoring

Scheme in Bidirectional WDM Transmission Using ASE-Injected FP-LD". The above-mentioned technical content published in the Institute of Electrical and Electronics Engineers (IEEE), the channel in the master is using a series of fiber optic power meters or spectral analysis The instrument is tested. These methods are limited to detecting the connection loss and the position of the breakpoint cannot be confirmed.

In addition, other alternative methods include: (1). Published in IEEE

Photonics Technol. Letters, vol. 20, pp. 2039-2041, 15 Dec. 2008 (H. Fathallah, Μ. M. Rad and L. A, Rusch et al.), entitled “PON Monitoring: Periodic Encoders with Low

The technical content of Capital and Operational Cost, which uses optical coding methods; (2). Published in Optics Communications, vol. 281, pp. ^ 2218-2226, 2008 (E. Wong, X. Chao and C. J. ❹

Chang-Hasnain et al., entitled "Upstream vertical cavity surface-emitting lasers for fault monitoring and localization in WDM passive optical networks", in which low-cost vertical cavity surface-emitting lasers (VCSELs) are implemented. Channel monitoring; or (3). Published in OFC/NFOEC 2008 Conf. Proc., San Diego, Paper JThA95 (A. Chowdhury, M.-F. Huang, H.-C. Chien, G. Ellinas and G. -K. Chang et al.) titled "A Self-Survivable WDM-PON Architecture with Centralized 6 201044803

Wavelength Monitoring, Protection and Restoration for both Upstream and Downstream Links", published in IEEE Photonics Technol. Letters, vol. 15, pp 1660-1662, Nov. 2003 (T.-J. Chan, C.-K. Chan, L .-K. Chen and F. Tong et al.) titled "A Self-Protected Architecture for

Wave length-Division-Multiplexed Passive Optical

Networks", published in Optics Express, vol. 15, pp. 4863-4868, 16 Apr. 2007 (K. Lee, SB Lee, JH Lee, Y.-G. Han, S.-G. O Mun, S. -M. Lee and C.-H. Lee et al., entitled "A self-restorable architecture for bidirectional wavelength-division-multiplexed passive optical network with colorless ONUs", published in Optics Communications, vol. 281, pp. 4606-4611, 2008 (X. Cheng, YJ Wen, Z. Xu, Y. Wang, and Y.-K. Yeo et al.) entitled "Survivable WDM-PON with self-protection and in-service fault localization capabilities," "Technical content, etc., proposes fail-safe

The U (Fail-Safe) architecture is designed to provide protection against fiber failure. However, none of the above methods can accurately determine the exact position of the breakpoint. In view of the above-mentioned shortcomings of the prior art, the present invention proposes a novel system architecture for monitoring errors that can monitor the precise location of nodes and diagnostic breakpoints. SUMMARY OF THE INVENTION One object of the present invention is to provide a bi-directional multi-wavelength path 7 201044803 and an amplification module capable of providing a highly elastic up-down signal by selecting a doped fiber optical amplifier, the present invention The system can operate at 10 Gbps, 4 Gbps or higher. Therefore, it is easy to upgrade the system of the present invention. As long as the correct slanted fiber optical amplifier is selected, the gain of different signals can be provided to meet the requirements of the system. A further object of the present invention is to provide a bi-directional multi-wavelength//amplification module capable of monitoring the precise position of a node and a diagnostic breakpoint, and the user can apply to short, medium and long-distance light according to system requirements. The network system, ❹ achieves a distance-free optical network monitoring system. Another object of the present invention is to provide a communication and monitoring signal routing pull group configuration in a distributed multiplexed passive optical network system architecture, wherein the overnight and monitoring signal routing module can extend the system to a long distance (more than 5 〇 Km) application. Another object of the present invention is to provide a communication and monitoring signal routing, and the optical time domain reflectometer optical path through the 5fl and monitoring signal routing module can make the system suitable for uplink and downlink signals and light. The time domain reflectometer optical path U nine traces, which solves the problem that the optical time domain reflectometer signal cannot pass through the path of the optical fiber amplifier. According to the invention, the multi-wavelength multi-wavelength routing and amplifying module of the present invention comprises: a young device for measuring the first information, the first-monitoring optical signal and/or the - (four) Signal plane; dichroic l frequency (four) wave ^ 'contains two frequency bands, pure light combiner for ς疋 贝-before material k, first-monitoring optical signal and - error detection signal is one of the frequency bands - the band transmits its signal; the first - optical amplifier, 8 201044803 (four) dichroic band filter 'used to amplify the first light signal; 3_埠来循俨„„ ^ 贝枓t 5虎和第一监第2璋_—(4) 14 pure first—optical amplifier, amplifier and dichroic band chopper; second optical chest isolation=-the third 埠 of the first circulator; the second one is off, the face is connected with 3_蟑光Flute. First amplifier, coupled to the second optical isolator, using the ^^^ signal and the second monitoring optical signal; and, 4-埠光循二璋 coupled to the second optical amplifier, the second side is connected to the dichroic ο : Γ , the third 璋 connected error detection signal, the first light is light: According to one aspect of the invention, the present invention provides a split multiplex passive week The system architecture includes a main control terminal, the main control terminal includes a dimming signal and an error detection signal, and a second f-array waveguide grating, a communication and monitoring signal routing module, a = occupational grating; Two-array waveguide communication and monitoring signals 光栅 grating .u B pa M . , coupled to the second array of waveguides, the first gate 'and the 'on_ column; coupled to the power splitter and the remote node. The remote node includes a light switch, a dichroic color band filter.", a transfer light bucker; a transmitter end, which is connected to a dichroic color band chopper; a dichroic color band filter core Bragg grating coupled to the second 埠 of the 3-turn circulator; the first connected fiber Bragg grating; and the second receiving end, the third 环 of the ring. The present invention will be described in detail in conjunction with the preferred embodiments and the accompanying drawings. 9 201044803 It should be understood that all preferred embodiments of the present invention are for illustrative purposes only and are not intended to be used The present invention is not limited thereto, and thus the present invention is also widely applicable to other embodiments, and the present invention is not limited to any embodiment 'supplement (10) attached patent (four) and its same (four) domain The error detection system is mainly applied to the passive optical network close to the user end to detect whether there is an error in the path in the optical network, and the heartbeat is reliable in the wrong position of the optical network. The passive optical network is simple and inexpensive. , and the overall structure can be based on Domain, environment or special needs, such as t-topography, tree topology or bus topology, etc. Topology 发明 t description - multi-wavelength multi-wavelength optical money routing and amplification mode, can be based on split-wave multiplexing technology It is used for simultaneous real-time monitoring and abnormal diagnosis of high-capacity single-fiber hybrid passive optical network. Avoid interference between two-way communication, downlink and uplink (dGW_eamand 〇 signal system m different frequency band. Monitoring and error judgment _u -dlagnGsis) The two main parts of the function are the communication and monitoring routing module and the signal selection switch module. In addition, with a light anti-u detector, the wrong judgment test path can be greater than 5G kilometers. The test result of the method shows the distance between the downlink and the uplink of 1G_Gb/s. &) "In the bidirectional multi-wavelength optical signal routing and amplification mode of the present invention, the uplink and downlink signals and the uplink and downlink monitoring signals can be obtained by using _ fiber The optical amplifier (Talk A) enhances the signal strength, and the slanted fiber optic amplifier is configured in the Monitoring Signal Routing Module (TMR). Therefore, the concept of the present invention is as follows: 201044803 on the network® in a small split-wave multiplexed passive optical network to an extended 2-night=long-haul optical network. The flexibility of this implementation is not seen in other traditional monitoring and error diagnosis methods. / The optical time domain reflectometer of the present invention can be used with up and down signals and up and down = control (4) (d) use even when these signals are amplified by a fiber optic amplifier. This is because the optical path trajectory of the optical time domain reflectometer does not pass through the downstream and upstream optical amplifiers in the communication and monitoring signal routing module. If the reflected signal is amplified, the optical time domain reflectometer cannot accurately determine the position of the error (breakpoint). Therefore, the above conditions are necessary. The concept and implementation method of the present invention for combining the use of optical pickups or reflectometers with the amplification of uplink and downlink signals and uplink and downlink monitoring signals cannot be achieved by the methods of the prior art. The high-performance real-time monitoring system and error detection of the present invention can be applied to the _lligent buildings. In general, the functions required for a smart building include instant monitoring, fixed short-term error detection, and when the normal uplink and downlink signals are interrupted, the backup system can automatically actuate it as a temporary backup solution. The bidirectional multi-wavelength optical signal routing and amplifying module of the invention can be placed in a telecommunication device, which is used for a metro network, a regional network, a fiber to the home network, and a fiber to the Fiber t〇the premises network. Referring to the first figure, it is a schematic diagram of the architecture of the split-wave multiplexing passive optical network (WDM-PON) system of the present invention. The single-bidirectional fiber optic system connects the host 100 to the optical network node 101, wherein the optical network node is the device at the location of the user. Using the arrayed waveguide grating 102, the 11 201044803 ❹ N formatted optical downlink signals in the main control terminal 100, the standard * is ',,', is coupled to the single mode light, the fiber 102a 丨. The optical downlink signal (-,. A 0 is transmitted by the transceivers 1〇3:1, 2~1()3-N. When the uploaded optical signal is transmitted to the remote node, the optical signal is transmitted through the arrayed waveguide grating 1〇7 in another system. Multiplexed 'and routed to the optical network 1〇1 of the client. In order to check the status of the network, a transceiver signal of a wavelength different from the downlink signal is sent from the transceiver 104 of the master terminal, and this signal is multiplexed to the downstream optical network. Similarly, the N formatted optical uplink signals ~, ..., _, ') and the uplink monitoring signal ' from the optical network node 101 are multiplexed onto the optical network. All users The devices on the optical network node share the same uplink (uplink) monitoring wavelength signal in time division multiplexing (TDM) mode. In order to avoid interference between two-way communication, the downlink signal is specified in the l-band, and the uplink signal is Designated in the C band. Communication and monitoring signals are routed to the gut (four) m〇mt 〇ring_slgnai r_er : and) Module 〇6 is used to guide the downlink and uplink communication of the optical path and the uplink and downlink monitoring signals. The power splitter is just the lxN power splitter, for example, it is used to match the monitoring signal to the equal material. All optical network nodes. Switch array (please subtract (4) dragon - standard monitor (4) or - error position 2 = !. In other words, 'switch array 109 will decide to use the monitor or wrong position detection method to detect each light The network node. The furnace error position _ method can use the optical time domain reflectometer 105 to:: point: : often: the switch array 109 establishes the signal of each node to replace the error or period, optical time domain reflection It is the monitoring signal on the line. The multiplexed down-going optical signal enters the light source port 110, and then passes through the two-way & L band/c-band filter (1), and enters the -3-thin circulator 113. As for 璋2, then through the fiber Bragg grating 115, the signal is directly received by the user's receiver 116. The lower monitoring signal is reflected by the fiber Bragg grating 115 into the 淳2 to 4 3 of the % 循 循 、, Then received by monitoring i 14 receives a signal. In one embodiment, the distal node·point 1〇1 includes a light combiner 〇110' dichroic L-band/c-band chopper 1U, and the optical coupler (4) The transmitting end 112 is connected to the dichroic L-band/c-band filtering vehicle optical multiplexer 113, wherein the i-th light-contact dichroic L-band/c-band chopper 111; the fiber Bragg grating 115, coupled to a second 埠 of the 循环 circulator (1); a first receiving end 116 coupled to the fiber Bragg grating 115; and a second receiving end 114 coupled to the third 3 of the 3_ 埠 circulator ιΐ3. It is a schematic diagram of the split-wave multiplexing passive optical network system of the present invention. From the second figure, the information of the overall system is known in detail. The delivery process and the operation of the multi-wavelength multi-wavelength routing and amplification module (communication, monitoring, signal routing module) 2G6. In the second figure, the downlink signal and the downlink monitoring wavelength of the arriving optical network node are transmitted to the optical network via the C-band/L-band 2 filter, and by the optical circulator and the optical fiber Bragg grating. Node data receiver and monitoring signal reception = three uplink and monitoring signals originating from the optical network node are combined with an optical coupler and transmitted to the upstream optical fiber line through the C-band/L-band optical filter. In one embodiment, the communication and monitoring signal routing module 2〇6 includes 13 201044803 optical coupler 220, dichroic L-band/C-band filter 221, optical isolator 222, optical amplifier 223, 3-dimmer Circulator 224, optical isolator 225, optical amplifier 226, and 4-turn circulator 227. The optocoupler 22 is configured to couple the first data signal, the first monitor optical signal, and/or an error detection signal. The dichroic L-band/C-band filter 221 includes two frequency bands, and is coupled to the optical coupler 220 for determining that the first data signal, the first monitoring optical signal, and an error detection signal are from two frequency bands. One of the bands passes its signal. The optical amplifier 223 is coupled to the dichroic L-band/c-band filter 〇 2 4 2 to amplify the first data signal and the first monitoring optical signal. The third light source 224' is coupled to the optical amplifier 223, and the second side is coupled to the arrayed waveguide grating 207. The optical isolator 225 is coupled to the third 3 of the 璋 循环 circulator 227 and is coupled to the optical amplifier 226 for amplifying the second data signal and the second monitoring optical signal. a 4-turn circulator 227, wherein the second 丨埠 is coupled to the optical amplifier 226, the second 埠 is coupled to the dichroic L-band/c-band filter 221, the third 埠 reflection error detection signal, and the fourth 埠 coupling light Coupler 22〇. In addition, the optical isolator 222 is coupled to the optical amplifier 223 and the dichroic L-band/C-band filter 221 . The field downlink communication 彳 § (labeled iD1, ...., λ ΟΝ) is sent from the transceiver 203 - 1 203_Ν of the master terminal 2, where Ν is an arbitrary integer, multiplexed via the arrayed waveguide grating 202, and then transmitted through the fiber 2〇2a is passed to the communication and monitoring signal routing module 2〇6. Into the communication and monitoring signal routing module 206, which sequentially passes through the optical coupler 22, the dichroic L-band/c-band filter 221 and the optical isolator 222, wherein the optical isolator 222 is used to prevent entry into the optical fiber optical amplifier. 223, such as light backscattering of a doped fiber optical amplifier (EDFA), 14 201044803. The L-band erbium-doped fiber optical amplifier 223 shown in the path above the communication and supervisory signal routing module 206 of the second diagram is used to compensate for component signal loss occurring in the downstream signal. After amplification by fiber optic amplifier 223 k, the downstream signal passes through a 埠1 to 埠2' of a 3_ 埠 circulator 224 and then enters another arrayed waveguide grating (AWG) 2 〇 7 to multiplex the optical k number. Then, the multiplexed optical signal enters the optical coupler 21A, passes through the dichroic L-band/C-band filter 211, and enters a 埠1 to 埠2 of a 3_埠光循环益213, and then passes through the fiber Bragg grating. 215, 0 receives the signal directly from receiver 216.

The monitoring signal (labeled as λ0Μ) is sent from the transceiver 2〇4 of the master terminal, multiplexed via the arrayed waveguide grating 202, and then transmitted to the wanted and monitored signal routing module through the optical network 2〇2a. . The communication and monitoring L-route module 206 is sequentially passed through the optical coupler 22, the dichroic [band/C-band filter 221 and the optical isolator 222. After signal amplification via fiber optic amplifier 223, the monitor signal passes through a 埠1 to 埠2 of a 3_ 埠 circulator, and then enters another array of waveguide gratings 2〇7 to monitor light 唬 multiplex. The multiplexed optical signal then enters a power splitter 2〇8, such as a 1 xN power splitter, to evenly distribute the supervisory signal. Then, through the switch array 209 to select the monitoring signal, the signal is transmitted to the optical coupler 210 via the optical fiber 2〇2b, and then enters the 3-turn optical circulator 213 via the dichroic L-band/c-band filter 211.埠丨 to 埠2, then through the fiber Bragg grating 215, reflected by the fiber Bragg grating 215 into the _2 to 埠3 of the _ 循环 circulator 213, and then the monitor 214 receives the monitoring signal. 15 201044803 Ο 卜 The optical time domain reflectometer signal is transmitted from the optical time domain reflectometer 205 of the master terminal. multiplexed through the arrayed waveguide grating, and then transmitted to the communication and monitoring signal routing module via the optical fiber 202a. The incoming communication and supervisory signal routing module 206' also passes through the optical coupler 220 and the dichroic L-band/C-band chopper 221 in sequence. Thereafter, the optical time domain reflectometer signal = over: 4-anchor 227 itch 2 to bee 3. Next, the optical time domain reflectometer 佗唬 is passed to the switch array 2〇9, and the switch array 2〇9 decides to use the monitor=number or optical time domain reflectometer signal to detect each optical network node. When the abnormality diagnosis event occurs or during the period, the system will start the field reflectometer signal 唬 'switching through the switch array 209 to replace the monitoring signal on the problematic node. In addition, the uplink transmitted from the transmitting end of the optical network node 212 and the uplink monitoring signal pass through the optical coupler 217, the dichroic L-band, with the ferrocouple 21 optocoupler 21()' After entering the array waveguide optical thumb 2〇7 multiplex, the communication and monitoring signal routing module 2〇6 is entered, which is sequentially optically isolated into 225, the optical fiber optical amplifier 226 and the 4_thin optical circulator. After the signal is amplified by the optical fiber amplifier 226, it passes through the heart and the circulator 227! To 珲 2 ' then pass the signal to the dichroic 1-frequency ▼/c-band filter 221. After passing through the optical coupler 22, the fiber 202a reaches the master. "T, S above, in normal operation, the system continuously suffocates all nodes and receives their confirmation notifications by continuously transmitting the message I to simultaneously monitor all optical network nodes. When a node connection fails At the time, the system will establish a light path trajectory test of the optical time domain reflectometer to determine the position of the failed node. From the transceiver 2〇4 of the second figure, the monitoring signal begins to transmit a message 16 201044803 = = node. Downlink monitoring The wavelength of the signal is... with μ :::Ή, through the same path as the information signal, to one of the communication and i-signal routing module (AWG) 2〇7; and the evening to the arrayed waveguide grating ^ drought. The downlink monitoring signal is used to detect all optical network nodes, and its operating speed is lower than that of the information signal. 1 XN power splitter is used to equally distribute monitoring signals to all optical network nodes. When an optical network node receives When the downlink monitoring signal is transmitted, the optical network node will transmit the uplink message via L. The speed of the U line monitoring signal on the time division multiplexed basis (TDM-based) is low. ^ When a node connection fails, Light The domain reflectometer signal will be reflected back from the wrong path from the wrong path. The reflected pulse of the optical time domain reflectometer then enters the communication and monitoring signal routing module 206 4-turn cycle is the third of 227 Then, it is transmitted to the 4th 4 of the 4_ 埠 循环 循环. :: After the optical light combiner 220, the reflected pulse of the optical time domain reflectometer is transmitted back to the optical time domain reflectometer through the optical fiber 202a. Therefore, the detailed position of the breakpoint is detected by the inspection. The optical path trace of the optical time domain reflectometer will not pass through the optical amplifier 223 under the communication and monitoring signal routing module 206, nor will it pass through the upstream optical amplifier 226. Since the reflected signal of the optical time domain reflectometer is amplified, the position of the breakpoint cannot be correctly diagnosed, and only the breakpoint distance of one path can be calculated at a time, so the above conditions or conditions are necessary. The system of the present invention can simultaneously transmit. The downlink communication signals (λ〇1,...'λ〇Ν), the monitoring signals (λΟΜ), and the optical time domain reflectometer signals, that is, the above three signals are independent of each other 'will not cause shadows between each other 17 201044803 〇I does not continuously monitor the operation of the optical network node because of the system invented by the second, and does not smash whether the damaged node has been diagnosed. Network: material signal (lDl'.....,') and downlink The monitoring signal is multiplexed in the light, and the point is '' will be multiplexed by the arrayed waveguide grating. In the routing module 206, the downlink data is now controlled by the same optical path and the line number is on the downlink side... From the above, it can be seen from the above that the characteristics and advantages of the split-wave multiplexed passive material of the present invention include: 峪糸.· The first wood structure 1. Instant monitoring and error diagnosis can be operated in parallel with the user jp %. The upper and lower jaws (4): When the failed line is diagnosed, the monitoring system is not interrupted, and the line can still be continued for the current operation. In the system, the monitoring signals and error-prepared signals are in operation. : Invented as a scalable monitoring and error diagnostic system, and wavelengths can be assigned to additional users. The monitoring and error diagnostic system of the present invention can be scaled up to achieve greater power budget control. The inventive monitoring and error diagnostic system has a plurality of redundant two paths to provide network resiliency. When a field failure or emergency occurs in the primary network, a separate subsystem can automatically transition to the standby network. In an error-breaking system, the optical time domain reflectometer is only used when a connection error occurs. 2. 3. 4. 5. 6, 8. 18 201044803. The communication and monitoring signal routing module of the present invention is configured in the sub-wave passive optical network system architecture, and has the following features and advantages, including: (1) providing a highly flexible arrangement of uplink and downlink signals, when selecting _ Fiber optic light amplification! ! When the system can operate at ps, 40 Gbps or more, it is easy to upgrade the system of the present invention. As long as the user selects the correct doped fiber optical amplifier, the gain of different signals is provided to meet the requirements of the system. Can achieve the purpose; (2). Up and down signal 〇 and uplink and downlink monitoring signal routing module can extend the system to long distance (more than 50 km) application; (3). Optical time domain reflection through communication and monitoring money routing module The instrument light path has the following features, which can make the system suitable for the communication path and the optical time domain reflectometer light path trajectory, which solves the problem that the optical time domain reflectometer signal cannot pass through the doped fiber optical amplifier path. The above description is a preferred embodiment of the invention. Those skilled in the art should be able to appreciate the scope of the patent claims that are not intended to limit the scope of the invention. The scope of patent protection depends on the scope of the patent application and its equivalent fields. Any changes or modifications made by those skilled in the art without departing from the spirit of the invention are within the scope of the invention disclosed herein. . BRIEF DESCRIPTION OF THE DRAWINGS The invention can be understood by the following description of the preferred embodiments and the detailed description and the accompanying drawings. However, those skilled in the art should understand that the preferred embodiments of the present invention are intended to be illustrative and not to limit the scope of the present invention; Schematic diagram of the optical network system architecture. The second figure is a schematic diagram of the architecture of the split-wave multiplexing passive optical network system of the present invention. 3-Denon Circulator 113 Second Receiver 114 Fiber Bragg Grating 115 First Receiver 11 6 Master Terminal 200 Optical Network Node 201 Arrayed Waveguide Grating 202 Single Mode Fiber 202a, 202b Transceiver 203_1~203_N Transceiver 204 Light Time domain reflectometer 205 communication and monitoring signal routing module 206 array waveguide grating 207 power splitter 208 switch array 209 optical coupler 210 dichroic L band / C band filtering [main component symbol description] master 100 optical network Node 1 01 〇 Arrayed Waveguide Grating 102 Single Mode Fiber 102a Transceiver 103_1 Transceiver 103_2

Transceiver 103_N Transceiver 104 Optical Time Domain Reflector 105 ^ Communication and Monitoring Signal Routing Module 106 Arrayed Waveguide Grating 1〇7 Power Splitter 108 Switching Array 109 Optocoupler 110 Dichroic L-Band/C-Band Filter 111 Transmit End 112 20 201044803 211 Transmitter 212 3-Bright Circulator 213 Second Receiver 214 Fiber Bragg Grating 215 First Receiver 216 Optocoupler 217 Optocoupler 220 〇 Dichroic L-Band/C-Band Filter 221 Optical Isolator 222 Optical Amplifier 223 3- Twilight Circulator 224 Optical Isolator 225 Optical Amplifier 226 4- Twilight Circulator 227

twenty one

Claims (1)

201044803 VII. Shenqing patent scope: 1 · A two-way multi-turbidity county long-skin routing and amplifying module, including: an optocoupler for the first capital - ^ ^ · ΘΙ ^ Beike ring, The first monitoring signal and/or a la 5 loss detection ## light combination; the dichroic color band filter, including __ffl ^ ^ 匕1 2 a frequency ▼, coupled to the optical coupler, used to determine S The first information of Hai is lacking: g] . _ y , .唬, the first monitoring signal and the error detection 4 Lu 5 Tiger transmits its signal from one of the two frequency bands of the two bands; the optical amplifier is coupled to the f a 4-band-to-color band filter for amplifying the first data signal or the first monitoring signal; a 3-turn circulator, wherein the first 埠 is coupled to an array of waveguide gratings; the first optical isolator is coupled Connected to the first wave amplifier; the first optical amplifier, the second optical amplifier and the dichroic color band filter, the optical isolator 'couples to the third turn of the 3_thoracic circulator; An optical amplifier coupled to the second optical isolator for amplifying the second data signal or the second monitoring signal; and a 4_bee optical circulator, wherein the first optical amplifier is connected to the second optical amplifier, the second bee The two-way color band chopper is coupled, the third side is connected to the wrong debt signal, and the fourth side is coupled to the optical coupler. 22 1 ‘, requesting the bidirectional multi-wavelength routing and amplification modulo 2 described in 帛1, wherein the dichroic band filter is composed of an L-band filter and a c-band filter. 201044803 3. The bi-directional multi-wavelength routing and amplifying module as described in claim 2, wherein the first data signal and the first monitoring signal are respectively a downlink downlink and a first downlink channel, The first downlink signal and the second downlink signal transmit their signals via an L-band filter. 4. The bidirectional multi-wavelength routing and amplification mode as claimed in claim 2, wherein the error detection signal transmits its signal via a C-band filter. The multi-wavelength routing and amplifying module according to claim 2, wherein the second data signal and the second monitoring signal are respectively an upper chirp signal and a second uplink signal, The first uplink signal and the second uplink signal pass their signals via a C-band filter. 6. The multi-wavelength multi-wavelength routing and amplification module set forth in claim 1, wherein the first optical amplifier is an erbium doped fiber optical amplifier. 7. The bidirectional multi-wavelength routing and amplification module of claim 1, wherein the second optical amplifier is a doped fiber optical amplifier. 8. A split-wave multiplexing passive optical network system architecture, comprising: a main control terminal, comprising a first data signal, a first monitoring signal, and a transmitting and receiving end of the error detecting signal, and a first array of waveguide gratings; And a monitoring signal routing module coupled to the first array of waveguide gratings; 23 201044803 first array of waveguide gratings, lightly connecting the communication and monitoring signal routing module and a remote node; and a power splitter coupled to the second array of waveguides a grating; and a switch array; coupled to the power splitter and the remote node. 9 The structure of the split-wave multiplexing passive optical network system described in claim 8, wherein the transmitting and receiving ends of the first data signal are transceivers. The structure of the split-wave multiplexing passive optical network system as described in claim 8, wherein the transmitting and receiving ends of the first monitoring optical signal are transceivers. 11. The split-wave multiplexing passive optical network system architecture of claim 8, wherein the transmit and receive ends of the error detection signal are optical time domain reflectometers. 12. The split-wave multiplexing passive optical network system architecture of claim 8, wherein the power splitter is configured to equally distribute the monitoring signal to the remote node. 13. The split-wave multiplexing passive optical network system architecture of claim 8, wherein the switch array is for selecting a signal of the monitoring signal or the error detection signal. 14. The split-wave multiplexing passive optical network system architecture according to claim 8, wherein the communication and monitoring signal routing module comprises: 24 201044803 optical combiner for the first data signal, the first The monitoring signal and/or an error detection signal are engaged; the first color frequency π chopper comprises two frequency bands, and the optical surface combiner is connected to determine the first data signal, the first monitoring signal and the The error detection signal is transmitted from one of the two frequency bands; the first optical amplifier is coupled to the dichroic color band filter for amplifying the first data signal and the first monitoring signal; a dimming circulator, wherein the fourth optical amplifier is connected to the first optical amplifier, and the second optical waveguide is switched by the second optical waveguide; the first optical isolator is coupled to the first optical amplifier and the dichroic color band filter. The second optical isolator is coupled to the third 埠 of the 3-turn circulator; the second optical amplifier is coupled to the second optical isolator for amplifying the material signal and the second monitoring signal; The first device is connected to the second optical amplifier, and the second is coupled to the second optical amplifier. The second: the dichroic band filter is coupled to the optical coupler. ^The structure of the split-wave multi-pass passive optical network system described in the long term 14, the vertical-to-color band wave filter is filtered by the 1-band chopper and the C-band 16. As described in the first item of the claim The multi-passive optical network system architecture, the Z-batch h and the first monitoring signal are respectively a first lower 25 201044803 = number and a second τ line signal, the first downlink signal and the second signal The signal is transmitted via an L-band filter. 17. The split-wave multiplexing passive optical network system architecture according to claim 15, wherein the error signal is transmitted by the C-band money device. 18. The split-wave multiplexing optical network described in claim 15 The second system signal and the second monitoring signal are respectively a first uplink signal and a first uplink signal, and the first uplink signal and the second uplink signal are transmitted through a C-band filter. Pass its signal. 19. The split-wave multiplexing passive optical network system architecture of claim 14, wherein the first optical amplifier is a doped fiber optical amplifier. 20. The split multiplex passive optical network system architecture of claim 19, wherein the second optical amplifier is a doped fiber optical amplifier. 21. The split multiplex passive optical network system architecture of claim 19, wherein the optical coupler is coupled to the first arrayed waveguide grating. The split-wave multiplexing passive optical network system architecture of claim 8, wherein the remote node comprises: an optical phase number and a dichroic color band filter coupled to the optical coupler; 26 201044803 a transmitting end, The two-way color band filter is coupled to the first receiving end and coupled to the dichroic color band filter. 23. The split-wave multiplexing passive optical network system architecture of U22, further comprising a 3_埠(4) ring 11, wherein the first (four) (4) the dichroic band filter. 24 = The split-wave multiplexing passive optical network system described in claim 23 includes a fiber Bragg grating, and the second multiplexer passive optical network described in the second bee 25 The road system frame 1 includes a first receiving end, and is connected to the third/bee of the 3_bee optical circulator. Further A: The split-wave multiplexing passive optical network described in claim 22 is composed of an L-band filter and a c-band filter. L-band filtering 27